cognac, kids have different aptitudes and rates of learning.
Tutoring is usually a good idea if a child is not able to keep up with the school work and/or is struggling with certain concepts (assuming of course the tutor is qualified).
Schools generally will NOT recommend tutoring, even when warranted, because doing so may legally obligate them to pay for it.
In reference to your mom, we have over a century of evidence conclusively proving that "the end is NOT right around the corner."
Your mom needs a tutor, on how to think!